rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 0, t=10502 jiffies, g=97957, q=62 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4295146578-4295136076), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10502 jiffies! g97957 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:R  running task     stack:28336 pid:16    tgid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5376 [inline]
 __schedule+0xedb/0x5af0 kernel/sched/core.c:6688
 __schedule_loop kernel/sched/core.c:6763 [inline]
 schedule+0xe9/0x270 kernel/sched/core.c:6778
 schedule_timeout+0x137/0x290 kernel/time/timer.c:2167
 rcu_gp_fqs_loop+0x1ec/0xb10 kernel/rcu/tree.c:1631
 rcu_gp_kthread+0x24b/0x380 kernel/rcu/tree.c:1830
 kthread+0x2c6/0x3a0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 19376 Comm: syz-executor.1 Not tainted 6.7.0-rc8-syzkaller-00130-g6d0dc8559c84 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:separate_irq_context kernel/locking/lockdep.c:4622 [inline]
RIP: 0010:__lock_acquire+0xa7e/0x3b20 kernel/locking/lockdep.c:5121
Code: fc ff df 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e df 28 00 00 48 8b 04 24 8b 80 b8 0a 00 00 85 c0 74 77 48 8b 74 24 28 <48> 8d 04 80 48 8d 6c c6 d8 48 b8 00 00 00 00 00 fc ff df 48 8d 7d
RSP: 0018:ffffc900003f8ae8 EFLAGS: 00000002
RAX: 0000000000000002 RBX: 49da982df18c1733 RCX: ffffffff8166b5a5
RDX: 1ffff11004d34157 RSI: ffff8880269a0ac0 RDI: ffffffff91f11e80
RBP: 0000000000000040 R08: 0000000000000000 R09: fffffbfff23e23d0
R10: ffffffff91f11e87 R11: 0000000000000002 R12: ffff8880269a0b10
R13: ffffed1004d34157 R14: ffff8880269a0ac0 R15: 0000000000000002
FS:  00007f05e86136c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020519030 CR3: 0000000078ff8000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 lock_acquire kernel/locking/lockdep.c:5754 [inline]
 lock_acquire+0x1ae/0x520 kernel/locking/lockdep.c:5719
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x3a/0x50 kernel/locking/spinlock.c:162
 debug_object_deactivate lib/debugobjects.c:783 [inline]
 debug_object_deactivate+0x113/0x320 lib/debugobjects.c:771
 debug_hrtimer_deactivate kernel/time/hrtimer.c:427 [inline]
 debug_deactivate kernel/time/hrtimer.c:483 [inline]
 __run_hrtimer kernel/time/hrtimer.c:1656 [inline]
 __hrtimer_run_queues+0x470/0xc20 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1814
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline]
 __sysvec_apic_timer_interrupt+0x105/0x400 arch/x86/kernel/apic/apic.c:1082
 sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1076
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:lock_acquire+0x1ef/0x520 kernel/locking/lockdep.c:5722
Code: c1 05 4d 92 9b 7e 83 f8 01 0f 85 b4 02 00 00 9c 58 f6 c4 02 0f 85 9f 02 00 00 48 85 ed 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc90000d0f600 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff920001a1ec2 RCX: ffffffff8166067e
RDX: 0000000000000001 RSI: ffffffff8acca240 RDI: ffffffff8b2ed960
RBP: 0000000000000200 R08: 0000000000000000 R09: fffffbfff23e23e5
R10: ffffffff91f11f2f R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000000 R14: ffff88807cb45d90 R15: 0000000000000000
 __mutex_lock_common kernel/locking/mutex.c:603 [inline]
 __mutex_lock+0x175/0x9d0 kernel/locking/mutex.c:747
 __unix_dgram_recvmsg+0x267/0xee0 net/unix/af_unix.c:2380
 unix_dgram_recvmsg+0xc3/0xf0 net/unix/af_unix.c:2485
 sock_recvmsg_nosec net/socket.c:1046 [inline]
 ____sys_recvmsg+0x4ab/0x5c0 net/socket.c:2803
 ___sys_recvmsg+0x115/0x1a0 net/socket.c:2847
 do_recvmmsg+0x2af/0x740 net/socket.c:2941
 __sys_recvmmsg net/socket.c:3020 [inline]
 __do_sys_recvmmsg net/socket.c:3043 [inline]
 __se_sys_recvmmsg net/socket.c:3036 [inline]
 __x64_sys_recvmmsg+0x235/0x290 net/socket.c:3036
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f05e787cd29
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f05e86130c8 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f05e79ac050 RCX: 00007f05e787cd29
RDX: 00000000040002db RSI: 0000000020000740 RDI: 0000000000000003
RBP: 00007f05e78c947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f05e79ac050 R15: 00007ffc42bb0fd8
 </TASK>